d5971c230d
This fix is part of the effort to convert commands to spf13/cobra #23211. Thif fix coverted command `docker port` to use spf13/cobra Note: As part of this fix, a new function `RequiresMinMaxArgs(min int, max int)` has been added in cli/required.go. This function restrict the args to be at least min and at most max. Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
79 lines
1.8 KiB
Go
79 lines
1.8 KiB
Go
package cli
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import (
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"fmt"
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"strings"
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"github.com/spf13/cobra"
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)
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// NoArgs validate args and returns an error if there are any args
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func NoArgs(cmd *cobra.Command, args []string) error {
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if len(args) == 0 {
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return nil
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}
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if cmd.HasSubCommands() {
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return fmt.Errorf("\n" + strings.TrimRight(cmd.UsageString(), "\n"))
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}
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return fmt.Errorf(
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"\"%s\" accepts no argument(s).\nSee '%s --help'.\n\nUsage: %s\n\n%s",
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cmd.CommandPath(),
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cmd.CommandPath(),
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cmd.UseLine(),
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cmd.Short,
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)
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}
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// RequiresMinArgs returns an error if there is not at least min args
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func RequiresMinArgs(min int) cobra.PositionalArgs {
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return func(cmd *cobra.Command, args []string) error {
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if len(args) >= min {
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return nil
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}
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return fmt.Errorf(
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"\"%s\" requires at least %d argument(s).\nSee '%s --help'.\n\nUsage: %s\n\n%s",
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cmd.CommandPath(),
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min,
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cmd.CommandPath(),
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cmd.UseLine(),
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cmd.Short,
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)
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}
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}
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// RequiresMinMaxArgs returns an error if there is not at least min args and at most max args
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func RequiresMinMaxArgs(min int, max int) cobra.PositionalArgs {
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return func(cmd *cobra.Command, args []string) error {
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if len(args) >= min && len(args) <= max {
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return nil
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}
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return fmt.Errorf(
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"\"%s\" requires at least %d and at most %d argument(s).\nSee '%s --help'.\n\nUsage: %s\n\n%s",
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cmd.CommandPath(),
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min,
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max,
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cmd.CommandPath(),
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cmd.UseLine(),
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cmd.Short,
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)
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}
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}
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// ExactArgs returns an error if there is not the exact number of args
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func ExactArgs(number int) cobra.PositionalArgs {
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return func(cmd *cobra.Command, args []string) error {
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if len(args) == number {
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return nil
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}
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return fmt.Errorf(
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"\"%s\" requires exactly %d argument(s).\nSee '%s --help'.\n\nUsage: %s\n\n%s",
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cmd.CommandPath(),
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number,
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cmd.CommandPath(),
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cmd.UseLine(),
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cmd.Short,
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)
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}
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}
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